It wanders from the original quote, but "irrationality is slow suicide" is a great connection to make. (And if you want a quote, I'm sure you can find something like that from Rand.)

But again: now you are equating irrationality with deliberate suicide.

Whether PradyumnGanesh is or isn't (though I don't think they are), that doesn't change their observation that self-inflicted violence is a relatively common form of violence, at least going by fatal violence.